Know Your Environment. Protect Your Health.

2,4-D

The Cape Master System

2,4-D (2,4-dichlorophenoxyacetic acid) is a herbicide that can be applied directly to GMO corn and soy plants engineered to withstand this toxic chemical. Americans' exposures to 2,4-D from food and drinking water will likely increase in years to come as farmers plant more of these GMO crops. Read More.

2,4-D is an endocrine disruptor that interferes with thyroid hormones. The International Agency for Research on Cancer classifies 2,4-D as possibly carcinogenic to humans. In occupational studies, farmers exposed to 2,4-D tended to have higher incidences of damaged and malformed sperm. Laboratory animals exposed to 2,4-D during gestation are born underdeveloped and are more likely to have birth defects.

 

67

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND150ND
2020ND50ND
2021ND40ND
2022ND160ND
2023ND260ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 20 ppb

The EWG Health Guideline of 20 ppb for 2,4-D was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

EPA Maximum Contaminant
Level (MCL): 70 ppb

The legal limit for 2,4-D, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the nervous system, harm to the thyroid, and hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-06CA17756-01ND
2019-04-16CC02949-01ND
2019-07-09CC09160-01ND
2019-07-09CC09160-02ND
2019-07-09CC09160-03ND
2019-07-09CC09161-01ND
2019-07-09CC09161-02ND
2019-07-09CC09161-03RE1ND
2019-07-09CC09161-04ND
2019-10-15CC14175-03ND
2019-10-15CC14175-04ND
2019-10-15CC14175-02RE1ND
2019-10-15CC14174-03ND
2019-10-15CC14174-01ND
2019-10-15CC14174-02ND
2019-10-15CC14175-01ND
2020-01-21CC18892-01ND
2020-01-21CC18893-01ND
2020-05-05CD02657-01ND
2020-07-07CD08046-01ND
2020-10-20CD13482-01ND
2021-02-24CD21064-01ND
2021-05-04CE02282-01ND
2021-09-29CE07327-01ND
2021-10-26CE12278-01ND
2022-02-1637729_22-07136ND
2022-05-1837729_22-22018ND
2022-08-0837729_22-36827ND
2022-08-0837729_22-36826ND
2022-08-0937729_22-37248ND
2022-08-1937729_22-39864ND
2022-08-1937729_22-39863ND
2022-08-2237729_22-40007ND
2022-08-2237729_22-40006ND
2022-11-1737729_22-56712ND
2022-11-1737729_22-56713ND
2022-11-1737729_22-56706ND
2022-11-1737729_22-56705ND
2022-11-1737729_22-56704ND
2022-11-1737729_22-56701ND
2022-11-2137729_22-57219ND
2023-02-0737729_23-06324ND
2023-03-0837729_23-11894ND
2023-03-0837729_23-11939ND
2023-03-0837729_23-11940ND
2023-03-0837729_23-11941ND
2023-03-1037729_23-12256ND
2023-05-0337729_23-22152ND
2023-05-0337729_23-22173ND
2023-05-0337729_23-22169ND
2023-05-0337729_23-22153ND
2023-05-0337729_23-22150ND
2023-05-0337729_23-22154ND
2023-07-1337729_23-36823ND
2023-09-2137729_23-53797ND
2023-09-2137729_23-53796ND
2023-09-2137729_23-53795ND
2023-09-2137729_23-53752ND
2023-09-2737729_23-54803ND
2023-10-1237729_23-58185ND
2023-11-1537729_23-65034ND
2023-11-1637729_23-65479ND
2023-11-1637729_23-65480ND
2023-11-1637729_23-65484ND
2023-11-1637729_23-65485ND
2023-11-1637729_23-65486ND
2023-11-1637729_23-65487ND